US2817609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali metal alloy agents for autofluxing in junction forming
Assignee: Raytheon Co
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Filing: 1955-06-24
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Granted: 1957-12-24
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Warren P Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/50; C; C30; C30B; C30B31/00; C30B31/04; H10D; H10D62/00; H10D62/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF FUSING A METAL ALLOY PELLET TO A REGION OF AN ACTIVE IMPURITY-DOPED SEMICONDUCTOR STARTING CRYSTAL, SAID METHOD INCLUDING THE STEPS OF: PLACING AN ALLOY PELLET INCLUDING AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, CESIUM AND RUBIDIUM AND AN ACTIVE IMPURITY IN CONTACT WITH A REGION OF THE CRYSTAL; HEATING THE CRYSTAL AND THE PELLET TO A TEMPERATURE ABOVE THE MELTING POINT OF THE PELLET, BUT BELOW THE MELTING POINT OF THE CRYSTAL, THEREBY TO MELT THE ALLOY AND
Claim 2
Independent Claim
85 words
THE METHOD OF FUSING A METAL ALLOY PELLET TO A REGION OF AN ACTIVE IMPURITY-DOPED SEMICONDUCTOR STARTING CRYSTAL, SAID METHOD INCLUDING THE STEPS OF: PLACING AN ALLOY PELLET INCLUDING AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, CESIUM AND RUBIDIUM AND AN ACTIVE IMPURITY IN CONTACT WITH A REGION OF THE CRYSTAL; HEATING THE CRYSTAL AND THE PELLET TO A TEMPERATURE ABOVE THE MELTING POINT OF THE PELLET, BUT BELOW THE MELTING POINT OF THE CRYSTAL, THEREBY TO MELT THE ALLOY AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |